Details on Component Data for Pump Houses with Heat Exchangers
Information on the component data dialog for pump houses with heat exchangers in the Rohrnetzberechnung Quartiersnetze.
In this dialog, on the first tab, you define the component data with which the component is considered in the Rohrnetzberechnung Quartiersnetze . On the second tab, you define the prioritization for the component's article sets.
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Systems may be thermally coupled with each other by using a heat exchanger (local heating, process heating). Heat exchangers divide the pipe network into different systems. On the primary side, the heat exchanger behaves like a consumer, on the secondary side it behaves like an energy hub. When calculating, the program will take the secondary system into account first, the primary system is calculated second. The heat flow rates are automatically transferred from the secondary to the primary system. On the primary side, the capacity may be increased.
Name
In this field you can enter an individual name for the component. Clicking on 
restores the original name and overwrites the previous entry.
Settings
On this tab, you define all values relevant to the calculation for the component.
System Name
Defines the name of the the downstream system. The systems name appears in the calculation dialog in the drop-down list for system selection.
Flow Temperature, Return Temperature
Primary Side: The temperatures will be taken from the heat generator and will only be displayed here. The fields are deactivated and the temperatures can be modified only on the heat generator.
Secondary Side: Set the flow and return temperatures for the secondary system on the heat exchanger. Changing temperatures is only possible after having detected the heat network.
Heat Capacity
The heat flow rates are automatically transferred from the secondary to the primary system. On the primary side, the capacity may be increased. To do this, deselect the Heat Capacity checkbox.
Share of Energy Hub
Changing the values is only possible if systems with multiple energy hubs are used. If only one energy hub is included in the district network, the value is automatically set to 100 % and is not editable.
For systems with multiple energy energy hubs, enter here the portion of the mass flow rates that is supposed to be covered by the individual hub. At first, the default value of the portion is 100 %. You may split the portion of the mass flow rates so that the sum of all energy hubs is 100 %. Likewise, redundant energy hubs with a portion of 100 % each are possible. Moreover, mixed forms are possible: Some of the energy hubs add up to 100%, plus one or more redundant hubs, each contributing 100%. The sum of the mass flow rates of all energy hubs ought to be 100% or a multiple thereof, else, a notification will be displayed in the Reports.
Zeta, dp, kv
Enter either a fixed Zeta value, a fixed, absolute pressure loss in Pa or a cv value.
Volume
Enter the water volume of the pump house with heat exchanger. This value is used to calculate the system volume.
Calculate
The component contains an integrated pump. You can have the pump's capacity calculated or set the pump pressure manually.
Enabled: The pump's capacity is calculated and displayed in the field to the right of the checkbox.
Disabled: You can specify the pump's capacity in the input field to the right of the checkbox. Manually entered values are displayed in bold. Clicking 
resets manually entered values to the calculated pump pressure.
Fluid
Opens the Fluid dialog for editing the fluid used on the secondary side. Usually, the globally defined fluid that you specify in the dialog Fluid in the Settings is used.
Material
On the second tab, you define the local prioritization for the component's article sets. Any global settings defined in the corresponding Priorities (…) dialogs for building connections in the Connection Sets column of the Pipes and Connection Sets dialog may be overridden for this component.
Prioritizing for: Determines whether connection sets are defined for the Primary side or Secondary side.
Connection Type: Determines how the trenches are routed into the building and controls the selection options available under Option 1.
Option 1, Option 2, Option 3: Drop-down lists for defining the connection sets offered in the table. By selecting from the lists, you determine which entries are available in the subordinate list.
Additional Connection: Specifies the length of the additional connecting pipes that are required in addition to the pipes shown in the drawing to connect the pump house to the heat exchanger. Additional pipes are also part of the considered bill of materials.
Connection Sets: Table for prioritizing individual sets of items. Select a row, then use the 
and 
buttons to adjust the order for prioritizing the item sets.
Reset: Resets the order to the one specified in the corresponding Priorities (…) dialog for building connections, which is defined via the Pipes and Connection Sets dialog.